斜轧管机后台改进型长导辊的探讨与实践

Discussion on Modified Long Guide-roller of Outlet Table of Rotary Pipe Mill

针对国内某Accu Roll轧管机存在的问题,借鉴Assel轧管机后台设备结构,提出了一种改进型长导辊装置。分析了荒管在不同斜轧管机后台设备结构中的受力情况,详细介绍了改进型长导辊装置的性能特点。分析认为:改进型长导辊装置的两个压辊与两个长导辊共同形成了4个"导向辊"合围的导位,使得荒管不易被甩离轧线,解决了Accu Roll斜轧管机轧制过程中荒管扭转和甩动对其表面产生的划伤等问题,提升了轧制速度,提高了生产节奏和产量。

Addressing the problem as staying with a certain domestic Accu Roll pipe mill, a modified long guide-roller device is proposed with reference to the outlet table structure of the Assel pipe mill. Analyzed are the loading states of the shell on different outlet tables of the rotary pipe mill. Detailed are the performance characteristics of the modified long guide-roller device. The analysis result reveals that the two press rollers and the two long guide- roller of the device together form a guide position as encircled by four ＂guide-rollers＂ so as to make it uneasy to get the shell swung off the rolling line. Such a device leads to fixing of the problem with the Accu Roll pipe mill that scratch is caused to the shell surface due to its twisting and swing during the rolling process. As a result, the rolling speed of the mill is enhanced, and so are the production cycle and output.